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data sheet, v 1.1, january 2008 tle4921-5u dynamic differential hall effect sensor ic sensors never stop thinking.
edition 2008-01 published by infineon technologies ag, st.-martin-strasse 53, 81669 mnchen, germany ? infineon technologies ag 2008. all rights reserved. attention please! the information herein is given to describe certai n components and shall not be considered as a guarantee of characteristics. terms of delivery and rights to technical change reserved. we hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. information for further information on technology, delivery terms and conditions and prices pl ease contact your nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements components may contain dan gerous substances. for information on the types in question please contact your nearest infineon technologies office. infineon technologies components may only be used in life- support devices or systems with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safe ty or effectiveness of that device or system. life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.
template: mc_a5_ds_tmplt.fm / 4 / 2004-09-15 tle4921-5u revision history: 2008-01 v 1.1 previous version: v1.0 page subjects (major changes since last revision) 5 ordering code changed 11 ?output leakage curr ent? unit corrected 20 figures ?delay time between sw itching threshol d? exchanged and corrected 21 figure ?delay time versus di fferential field? corrected we listen to your comments any information within this document that yo u feel is wrong, unclear or missing at all? your feedback will help us to continuously improve the quality of this document. please send your proposal (including a reference to this document) to: sensors@infineon.com
tle4921-5u table of contents page data sheet 4 v 1.1, 2008-01 1overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 pin configuration (view on branded side of component) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3 circuit description (see figure 2 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5 electrical and magnetic parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 application configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7 typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
type marking ordering code package tle4921-5u 215u sp000013593 pg-sso-4-1 tle4921-5u dynamic differential ha ll effect sensor ic data sheet 5 v 1.1, 2008-01 bipolar ic 1 overview 1.1 features ? advanced performance ? high sensitivity ? symmetrical thresholds ? high piezo resistivity ? reduced power consumption ? south and north pole pre-induction possible ? ac coupled ? digital output signal ? two-wire and three-wire configuration possible ? large temperature range ? large airgap ? low cut-off frequency ? protection against overvoltage ? protection against reversed polarity ? output protection against electrical disturbances the differential hall effect s ensor tle4921-5u prov ides a high sensitivity and a superior stability over temperature and symmetrical thresholds in or der to achieve a stable duty cycle. tle4921-5u is particularly suitable for rotational speed detection and timing applications of ferromagnetic toothed wheels such as anti-lock braking systems, transmissions, crankshafts, etc. the integrat ed circuit (based on ha ll effect) provides a digital signal output with frequency proporti onal to the speed of rotation. unlike other rotational sensors differential hall ics are not influenced by radial vibration within the effective airgap of the sensor and requ ire no external signal processing.
tle4921-5u overview data sheet 6 v 1.1, 2008-01 1.2 pin configuration (view on branded si de of component) figure 1 table 1 pin definitions and functions pin no. symbol function 1 v s supply voltage 2 q output 3 gnd ground 4 c capacitor aep01694 q 2 gnd 3 c 4 v s 1 center of sensitive are a 2.67 2.5 1.53 b b a 0.2 a 0.2
tle4921-5u general data sheet 7 v 1.1, 2008-01 2 general 2.1 block diagram figure 2 block diagram aeb01695 schmitt- trigger amplifier highpass- filter hall-probes v (3v) protection device internal reference and supply 1 v s 2 q 4 c open collector protection device gnd reg 3 f
tle4921-5u general data sheet 8 v 1.1, 2008-01 2.2 functional description the differential hall sensor ic detects th e motion and position of ferromagnetic and permanent magnet structur es by measuring the differential flux density of the magnetic field. to detect ferromagnetic objects the ma gnetic field must be provided by a back biasing permanent magnet ( south or north pole of the magnet attached to the rear unmarked side of the ic package). using an external capacitor the generated ha ll voltage signal is sl owly adjusted via an active high pass filter with a low cut-off frequency. this caus es the output to switch into a biased mode after a time cons tant is elapsed. the time c onstant is determined by the external capacitor. filtering avoids age ing and temperature infl uence from schmitt- trigger input and eliminates device and magnetic offset. the tle4921-5u can be expl oited to detect toothed w heel rotation in a rough environment. jolts against the toothed wheel and ripple hav e no influence on the output signal. furthermore, the tle 4921-5u can be operated in a two-wire as well as in a three-wire- configuration. the output is logic compatible by hi gh/low levels regarding on and off. 2.3 circuit description (see figure 2 ) the tle4921-5u is comprised of a supply voltage referenc e, a pair of hall probes spaced at 2.5 mm, differential amplifier, filt er for offset compensation, schmitt trigger, and an open collector output. the tle4921-5u was designed to have a wi de range of application parameter variations. differential fields up to 80 mt can be detected without influence to the switching performance. the pre-induction field can either come from a magnetic south or north pole, whereby the field strength up to 500 mt or more will not influence the switching points. the improved temperature compensation enables a superior sensitivity and accur acy over the temperature range. finally the optimized piezo compensation and the integrated dynamic offset compensation enable easy manufacturing and elimination of magnet offsets. protection is provided at t he input/supply (pin 1) for over voltage and revers e polarity and against over-stress such as load dump, etc., in accordance with iso-tr 7637 and din 40839. the output (pin 2) is protected against vo ltage peaks and electrical disturbances.
tle4921-5u maximum ratings data sheet 9 v 1.1, 2008-01 3 maximum ratings table 2 absolute maximum ratings t j = -40c to 150c parameter symbol limit values unit remarks min. max. supply voltage v s -35 1) 1) reverse current < 10 ma 30 v output voltage v q -0.7 30 v output current i q ? 50 ma output reverse current - i q ? 50 ma capacitor voltage v c -0.3 3 v junction temperature t j ? 150 c 5000 h ? 160 2500 h ? 170 1000 h ? 210 40 h storage temperature t s -40 150 c thermal resistance pg-sso-4-1 r thja ? 190 k/w current through input-protection device current through output-protection device i sz i qz ? ? 200 200 ma ma t < 2 ms; v = 0.1 t < 2 ms; v = 0.1
tle4921-5u operating range data sheet 10 v 1.1, 2008-01 4 operating range note: in the operating range th e functions given in the circ uit description are fulfilled. table 3 esd protection human body model (hbm) tests according to: standard eia/jesd22-a114-b hbm parameter symbol limit values unit remarks min. max. esd - protection v esd ? 2 kv table 4 operating range parameter symbol limit values unit remarks min. typ. max. supply voltage v s 4.5 ? 24 v junction temperature t j -40 ? 150 c 5000 h ? ? 160 2500 h ? ? 170 1000 h pre-induction b 0 -500 ? 500 mt at hall probe; independent of magnet orientation differential induction ? b -80 ? 80 mt
tle4921-5u electrical and magnetic parameters data sheet 11 v 1.1, 2008-01 5 electrical and magnetic parameters table 5 electrical characteristics parameter symbol limit values unit test condition test circuit min. typ. max. supply current i s 3.8 4.3 5.3 5.9 8.0 8.8 ma ma v q = high i q = 0 ma v q = low i q = 40 ma 1 1 output saturation voltage v qsat ? 0.25 0.6 v i q = 40 ma 1 output leakage current i ql ? ? 50 a v q = 24 v 1 center of switching points: ( ? b op + ? b rp ) / 2 ? b m -1 0 1 mt -20 mt < ? b < 20 mt 1) 2) f = 200 hz 2 operate point ? b op ? ? 0 mt f = 200 hz, ? b = 20 mt 2 release point ? b rp 0 ? ? mt f = 200 hz, ? b = 20 mt 2 hysteresis ? b h 0.5 1.5 2.5 mt f = 200 hz, ? b = 20 mt 2 overvoltage protection at supply voltage at output v sz v qz 27 27 ? ? 35 35 v v i s = 16 ma i q = 16 ma 1 1 output rise time t r ? ? 0.5 s i q = 40 ma c l = 10 pf 1 output fall time t f ? ? 0.5 s i q = 40 ma c l = 10 pf 1 delay time t dop t drp t dop - t drp ? ? ? ? ? 0 25 10 15 s s s f = 10 khz ? b = 5 mt 2 filter input resistance r c 35 43 52 k ? 25c 2c 1
tle4921-5u electrical and magnetic parameters data sheet 12 v 1.1, 2008-01 note: the listed characteristics are ensured ov er the operating range of the integrated circuit. typical characteristics specify m ean values expected over the production spread. if not otherwise specified, typical characteristics apply at t j = 25c and the given supply voltage. filter sensitivity to ? b s c ? -5 ? mv/mt ? 1 filter bias voltage v c 1.6 2 2.4 v ? b = 0 1 frequency f 3) ? 20000 hz ? b = 5 mt 2 resistivity against mechanical stress (piezo) ? b m ? b h -0.1 -0.1 ? ? 0.1 0.1 mt mt f = 2 n 2 4) 1) the current consumption characteristic will be different and the specified values can slightly change 2) leakage currents at pin 4 should be avoided. the bias shift of b m caused by a leakage current i l can be calculated by: 3) for higher ? b the values may exceed the limits like following | ? b m | < | 0.05 ? b | 4) depends on filter capacitor c f . the cut-off frequency is given by . the switching points are guaranteed over the whole frequency range, but amplitude modification and phase shift due to the 1 st order highpass filter have to be taken into account. table 5 electrical characteristics (cont?d) parameter symbol limit values unit test condition test circuit min. typ. max. ? b m i l r c t () s c t () ----------------------------- = f 1 2 r c c f --------------------------------- =
tle4921-5u electrical and magnetic parameters data sheet 13 v 1.1, 2008-01 figure 3 test circuit 1 figure 4 test circuit 2 2 q c 4 c v i r 1) = c ? ? c 4.7 nf c v v gnd 3 aes0169 6 , qsat v qz c l ld v p v s r 300 ? sz v 1) i c 1 s v i s qr i q , i r l tle4921-5u aes0125 8 s v q gnd q v 2 1 4 3 1 k b op b hy ? ? f v s c min f max nf ? 470 c f tle4921-5u
tle4921-5u application configurations data sheet 14 v 1.1, 2008-01 6 application configurations two possible applicati ons are shown in figure 7 and figure 8 (toothed and magnet wheel). the difference between two- wire and three-wire a pplication is shown in figure 9 . gear tooth sensing in the case of ferromagnetic toothed wheel application the ic has to be biased by the south or north pole of a permanent magnet (e.g. smco 5 (vacuumschmelze vx145)) with the dimensions 8 mm 5 mm 3 mm) which should co ver both hall probes. the maximum air gap depends on: ? the magnetic field strength (m agnet used; pre-induction) and ? the toothed wheel that is used (dimensions, material, etc.; resulting differential field) figure 5 sensor spacing figure 6 tooth wheel dimensions b l a n s aea01259 a centered distance of hall probes b hall probes to ic surface lic surface to tooth wheel a = 2.5 mm b = 0.3 mm d t aea01260 din d diameter (mm) z number of teeth m module m = d / z (mm) t pitch t = m (mm) conversion din ? asa m = 25.4 mm/p t = 25.4 mm cp asa p diameter pitch p = z / d (inch) pd pitch diameter pd = z / p (inch) cp circular pitch cp = 1 inch / p
tle4921-5u application configurations data sheet 15 v 1.1, 2008-01 figure 7 tle4921-5u, with ferromagnetic toothed wheel figure 8 tle4921-5u, with magnet wheel signal circuitry processing (s) n (n) s hall sensor 1 aea01261 permanent magnet gear wheel hall sensor 2 magnet wheel n processing circuitry signal hall sensor 1 s hall sensor 2 aea0126 2 s
tle4921-5u application configurations data sheet 16 v 1.1, 2008-01 figure 9 application circuits aes01263 s v gnd q c c f 2 1 3 s v v signal line sensor mainframe r l 4 s r 470 nf two-wire-application r = s ? l 330 = r for example : 120 ? aes0126 4 s v gnd q c 2 1 3 p r s v v signal line sensor mainframe r l 4 three-wire-application 470 nf f c 4.7 nf 4.7 nf for example : r = 330 l ? p 0 = r 330 ? ...
tle4921-5u application configurations data sheet 17 v 1.1, 2008-01 figure 10 system operation aed01697 14 missing tooth wheel profile magnetic field difference large airga p small airgap s v q output signal operate point: release point: switches the output on ( ? switches the output off ( the magnetic field is defined as positive if the south pole of the magnet shows towards the rear side of the ic housing. (n) n (s) 1 bb 2 b = b 2 _ b 1 = 0.75 mt rp b ? ? b hys ? b op 0.75 mt _ = 1 b _ 2 b hys b rp b ? = ?? op + b > ? b rp q v = high) 1 b 2 b _ b < ? op = low) q v
tle4921-5u typical performance characteristics data sheet 18 v 1.1, 2008-01 7 typical performance characteristics quiescent current versus supply voltage quiescent current versus output current quiescent current versus temperature saturation voltage versus temperature 0 aed03167 1 2 3 4 5 6 7 8 10 ma 9 0 v s i q s i = 40 ma 51015 20 2 5 v s on i i s off s diff i 0 aed03169 1 2 3 4 5 6 7 8 10 ma 9 0 s i = 12 v 10 20 30 40 5 0 ma s on i out i s v 0 aed03168 2 4 6 8 10 ma -50 t j i on s i = 40 ma s on i i s off s diff i ?c -10 30 70 110 150 23 0 1 3 5 7 9 0 aed03170 mv -50 = 4.5 v 0 50 100 150 20 0 ?c j t s v q v q i = 50 ma 50 100 150 200 250 300 400
tle4921-5u typical performance characteristics data sheet 19 v 1.1, 2008-01 output saturation voltage versus i q @ 25c t j center of switching points versus temperature saturation voltage versus supply voltage hysteresis versus temperature -400 aed03171 mv -60 = 4.5 v s v q i ?0 ma, -40 -20 0 20 6 0 ma i q out sat voltage -300 -200 -100 0 100 200 300 -2 aed03173 -60 = 200 hz f -1 0 1 2 ?c m b t j m b = ( op b + b rp )/2 max typ min mt -20 20 60 100 18 0 0 aed03172 v 0 q v q i = 40 ma 0.05 0.10 0.15 0.20 0.25 0.30 0.40 t j = 25 ?c s v 5 10152025 3 0 0 aed03174 -60 = 200 hz f 1 2 3 4 ?c hy b t j hy b = rp b - b op max typ min mt -20 20 60 100 18 0
tle4921-5u typical performance characteristics data sheet 20 v 1.1, 2008-01 minimum switching field versus frequency delay time between switching threshold ? b and falling edge of v out at t j = 25c minimum switching field versus frequency delay time between switching threshold ? b and rising edge of v out at t j = 25c 0 aed03175 min b f f c = 1 ? 0.5 1.0 1.5 khz mt t j = 25 ?c = -40 ?c t j -2 10 -1 10 0 10 1 10 2 10 0 5 10 15 20 25 0 5000 10000 15000 20000 25000 hz s ? b = 2mt ? b = 5mt ? b = 2mt, f =200hz f t dop 0 aed03176 min b f f c = 1 ? 0.5 1.0 1.5 mt t j = 150 ?c = 170 ?c t j 10 -2 10 -1 10 0 10 1 khz 10 2 0 5 10 15 20 25 0 5000 10000 15000 20000 25000 hz s ? b = 2mt ? b = 5mt ? b = 2mt, f =200hz f t drp
tle4921-5u typical performance characteristics data sheet 21 v 1.1, 2008-01 delay time versus differential field rise and fall time versus temperature delay time versus temperature rise and fall time versus output current 10 aed03181 -50 t ns t r t f t 0 50 100 150 20 0 ?c 15 20 25 30 35 40 = 40 ma q i j 5.0 aed03180 -60 t ? t drp t dop t 5.5 6.0 6.5 7.0 7.5 8.0 8.5 -10 40 90 140 190 ?c ? = 2 mt, b = 200 hz f 0 aed03182 0 ns t r t f t 20 40 60 80 100 ma 20 40 60 80 100 120 = 25 ?c j t out i
tle4921-5u typical performance characteristics data sheet 22 v 1.1, 2008-01 capacitor voltage versus temperature filter sensitivity versus temperature switching thresholds versus mechanical stress filter input resistance versus temperature 0 aed03183 -50 t v 0 50 100 150 20 0 ?c 0.5 1.0 1.5 2.0 2.5 3.0 c v j typ -10 aed03185 -50 t m v/mt 0 50 100 150 20 0 ?c c s j typ -9 -8 -7 -6 -5 -4 -3 -2 -1 0 0.5 aed03184 0 f 1234 5 n 0.6 0.7 0.8 0.9 1.0 j t = 25 ?c ? rp , ? op ) ( max min b b 0.6 aed03186 -50 t 0 50 100 150 20 0 ?c j 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.6 c r r c @ 25?c
tle4921-5u typical performance characteristics data sheet 23 v 1.1, 2008-01 delay time for power on ( v s switching from 0 v to 4.5 v) t pon versus temp. periodjitter (1 ) versus temperature note: stresses above those listed here may cause perma nent damage to the device. exposure to absolute maximum rating cond itions for extended periods may affect device reliability. 0 aed03187 -50 t ms/nf 0 50 100 150 20 0 ?c k min typ max 0.05 0.10 0.15 0.20 0.25 0.30 0.40 ? = 10 mt b @ 0 aed03188 -40 t j itter j = 1 khz, f b p = 5 mt ?c 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 % 0.50 tle4921-5u 0 40 80 120 20 0 table 6 electro magnetic compatibility ref. din 40839 part 1; test circuit 1 parameter symbol level/typ status testpulse 1 testpulse 2 testpulse 3a testpulse 3b testpulse 4 testpulse 5 v ld iv / ? 100 v iv /100 v iv / ? 150 v iv / 100 v iv / ? 7 v iv / 86.5 v c b c c c c
tle4921-5u typical performance characteristics data sheet 24 v 1.1, 2008-01 figure 11 distance chip to upper side of ic p-sso-4-1 : 0.3 d : distance chip to branded side of i c mm ?.08 aea0271 2 hall-probe branded side d
tle4921-5u package outlines data sheet 25 v 1.1, 2008-01 8 package outlines figure 12 pg-sso-4-1 (plastic single small outline package) 6.35 ?.4 12.7 ?.3 ?.3 4 1 x 45? 12.7 ? -0.1 1 0.25 ?.05 7? 7? 0.2 +0.1 adhesiv e ?.5 6 1 -1 ?.5 18 tape 0.39 ?.1 -0.15 0.25 9 ?.5 23.8 +0.75 -0.5 38 max. 1 max. 3.38 3.71 (0.25) ?.08 ?.06 1.9 max. 5.16 ?.08 5.34 ?.05 0.1 max. (14.8) 1) 1.27 1.27 3.81 = 3 x 2 a a 1 ) no solder function area total tolerance at 10 pitches ? (useable length) tape ?? 14 0.2 ?.05 0.4 0.6 max. 4x 0.5 code code code gpo05357 you can find all of our packages, sorts of packing and others in our infineon internet page ?products?: http://www.infineon.com/products . dimensions in mm
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